Demystifying Deduplication Asheville NC

Of the assortment of technologies swarming around the storage and data protection space these days, one that can be counted on to garner both lots of interest and lots of questions among users is deduplication.

Staples
(828) 232-2886
65 Merrimon Avenue
Asheville, NC
Recycling Services
Recycling Desk
$3 Ink & Toner Credit
Hours
Mon-Fri: 8:00am-9:00pm Sat: 9:00am-9:00pm Sun :10:00am-6:00pm

Staples
(828) 696-1635
150 Highland Sq Dr US Hwy 64
Hendersonville, NC
Recycling Services
Recycling Desk
$3 Ink & Toner Credit
Hours
Mon-Fri: 8:00am-9:00pm Sat: 9:00am-9:00pm Sun :10:00am-6:00pm

Secure Backup Online Services, Ltd.
(828) 776-3339
825-C Merrimon Ave. #286
Asheville, NC
 
Contingent Network Service
(336) 855-5920
803 Friendly Center Road
Greensboro, NC
Services
Internet Consultants, Computer Software, Computer Network Hardware, Communications Services

Data Provided by:
Inflow Inc
(919) 941-1082
4518 S Miami Boulevard
Durham, NC
Services
Internet Services, Computer Hardware and Supplies, Computer Software, Internet Service Providers

Data Provided by:
OfficeMax
(828) 681-0081
1 McKenna Road
Arden, NC
Hours
M-F 8-9, Sa 9-9, Su 11-6*

Secure Backup Online
(828) 776-3339
825-C Merrimon Ave. #286
Asheville, NC
 
HC Systems
(828) 697-7711
120 Chadwick Ave Suite 2
Hendersonville, NC
 
Systems Technology Associates
(919) 460-0020
119 SW Maynard Road # 202
Cary, NC
Services
Computer Supplies Parts and Accessories, Help Desk Services, Computer Hardware and Supplies, Computer Software, Computer and Software Stores

Data Provided by:
Computer Living Corporation
(910) 235-3838
20 Parker Lane
Pinehurst, NC
Services
Computers and Equipment Repair and Maintenance, Computer Software, Computer Systems Consultants and Designers
Payment Options
MasterCard, VISA

Data Provided by:
Data Provided by:

Demystifying Deduplication

By Jim Damoulakis, ComputerWorld.com,

Of the assortment of technologies swarming around the storage and data protection space these days, one that can be counted on to garner both lots of interest and lots of questions among users is deduplication. The interest is understandable since the potential value proposition, in terms of reduction of required storage capacity, is at least conceptually on a par with the ROI of server virtualization. The win-win proposition of providing better services (e.g. disk-based recovery) while reducing costs is undeniably attractive.

However, while the benefits are obvious, the road to get there isn't necessarily as clear. How does one make a decision to adopt a particular technology when that technology manifests itself in so many different forms? Deduplication, like compression before it, can be incorporated in a number of different products types. While by no means a complete list, the major options for our purposes include backup software, NAS storage devices, and virtual tape libraries (VTL).

Even within these few categories, there are dramatic differences in how deduplication is implemented with each offering having its own benefits. The scorecard of feature tradeoffs includes:

Source vs. target deduplication

Inline vs. post-processing

Global vs. local span

Single vs. multiple head processing

Indexing methodology

Level of granularity

As with any set of products, these tradeoffs reflect optimization for specific design or market targets: high performance, low cost, enterprise, SMB, etc. For more detail on the range of deduplication options and their implications, you may want to check out my colleague Curtis Preston's Backup Central blog.

Until recently, one aspect of deduplication that was generally unquestioned was its focus: secondary data, particularly backup. However, there are growing signs that this too is changing. In theory, deduplication can be applied anywhere there is a significant amount of data commonality -- this is why backup is such a good fit.

However, if we look around for more examples of high data commonality, one area that comes to mind is virtualized server environments. Consider the number of nearly identical virtual C: drives in a VMware server cluster, for example. Recently NetApp has been leading the way among storage vendors in suggesting deduplication for primary storage in these environments. In fact, they have been steadily expanding their support of deduplication, initially offering it on their secondary Nearstore platforms, then on their primary FAS line, and as of last week on their V-series NAS gateways where they can deduplicate the likes of EMC, HDS, HP, and other storage.

Of course, for many, this is unchartered territory and the performance and management impact needs to be better understood. But given the higher costs of primary storage versus secondary, the potential to achieve a 20:1 savings in storage, even for just a portion of the environment, is quite tempting.

Jim Damoulakis is chief technology officer of GlassHouse Technologies Inc. , a leading provider of independent storage services. He can be reached at jimd@glasshouse.com.

Copyright © 2008 IDG. All rights reserved.